/*
 * Copyright 2007-present the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.maven.wrapper.cli;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

public class ParsedCommandLine {
  private final Map<String, ParsedCommandLineOption> optionsByString = new HashMap<String, ParsedCommandLineOption>();

  private final Set<String> presentOptions = new HashSet<String>();

  private final List<String> extraArguments = new ArrayList<String>();

  ParsedCommandLine(Iterable<CommandLineOption> options) {
    for (CommandLineOption option : options) {
      ParsedCommandLineOption parsedOption = new ParsedCommandLineOption();
      for (String optionStr : option.getOptions()) {
        optionsByString.put(optionStr, parsedOption);
      }
    }
  }

  @Override
  public String toString() {
    return String.format("options: %s, extraArguments: %s", quoteAndJoin(presentOptions), quoteAndJoin(extraArguments));
  }

  private String quoteAndJoin(Iterable<String> strings) {
    StringBuilder output = new StringBuilder();
    boolean isFirst = true;
    for (String string : strings) {
      if (!isFirst) {
        output.append(", ");
      }
      output.append("'");
      output.append(string);
      output.append("'");
      isFirst = false;
    }
    return output.toString();
  }

  /**
   * Returns true if the given option is present in this command-line.
   * 
   * @param option The option, without the '-' or '--' prefix.
   * @return true if the option is present.
   */
  public boolean hasOption(String option) {
    option(option);
    return presentOptions.contains(option);
  }

  /**
   * See also {@link #hasOption}.
   * 
   * @param logLevelOptions the options to check
   * @return true if any of the passed options is present
   */
  public boolean hasAnyOption(Collection<String> logLevelOptions) {
    for (String option : logLevelOptions) {
      if (hasOption(option)) {
        return true;
      }
    }
    return false;
  }

  /**
   * Returns the value of the given option.
   * 
   * @param option The option, without the '-' or '--' prefix.
   * @return The option. never returns null.
   */
  public ParsedCommandLineOption option(String option) {
    ParsedCommandLineOption parsedOption = optionsByString.get(option);
    if (parsedOption == null) {
      throw new IllegalArgumentException(String.format("Option '%s' not defined.", option));
    }
    return parsedOption;
  }

  public List<String> getExtraArguments() {
    return extraArguments;
  }

  void addExtraValue(String value) {
    extraArguments.add(value);
  }

  ParsedCommandLineOption addOption(String optionStr, CommandLineOption option) {
    ParsedCommandLineOption parsedOption = optionsByString.get(optionStr);
    presentOptions.addAll(option.getOptions());
    return parsedOption;
  }
}
